The comment has come up for several project so far and know that this partiualr problem is going to keep coming up in upcoming projects. We have a building that has one unisex restroom, and the LEED review comment was that the Total Daily Usage Rates needs to be adjusted accordingly. I know how to calculate the total daily usage, however my problem is this by how much do you change the usage by? For example we have two building where this has come up, one building had a only one other urinal while the second building had 12 urinals. How do you justify how much you change the daily usage? Is there a standard for this type of adjustment.
Thanks